US3729782A - Clamp assembly with tubular saddle member - Google Patents

Clamp assembly with tubular saddle member Download PDF

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Publication number
US3729782A
US3729782A US00245169A US3729782DA US3729782A US 3729782 A US3729782 A US 3729782A US 00245169 A US00245169 A US 00245169A US 3729782D A US3729782D A US 3729782DA US 3729782 A US3729782 A US 3729782A
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United States
Prior art keywords
clamp assembly
portions
bolt
end sections
arcuate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00245169A
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English (en)
Inventor
T Downing
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maremont Corp
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Maremont Corp
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Filing date
Publication date
Application filed by Maremont Corp filed Critical Maremont Corp
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Publication of US3729782A publication Critical patent/US3729782A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/06—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe ends
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
    • F16L25/04—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 comprising a collar or ring having a threaded pin rigid with the pipe-encircling member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/14—Bale and package ties, hose clamps
    • Y10T24/1412—Bale and package ties, hose clamps with tighteners
    • Y10T24/1433—Integral thread
    • Y10T24/1435—External thread
    • Y10T24/1437—Both ends threaded

Definitions

  • the saddle member disclosed in these patents is formed of sheet metal into a configuration which provides a pair of tubular end sections through which the legs of the U- bolt extend and a guillotine section extending centrally between the two tubular sections.
  • a characteristic of this type of saddle member is that the guillotine section provides a deforming line contact with the periphery of the outer tube to be connected through a peripheral extent of approximately 180 with both end sections providing an extension of such contact to a full 180 by a pair of axially diverging surfaces.
  • these clamp assemblies provide the required substantially gas-tight connection by deforming the thin-walled tubes connected inwardly with the interior surface of the bight portion of the .U- bolt and the central guillotine section and divergent surfaces of the end sections providing substantially 360 contact throughout the periphery of the tubes.
  • the second general type of saddle member presently in widespread use is likewise formed of sheet metal, the formation including essentially a central bottom wall and two side walls extending upwardly from opposite sides of the central wall having arcuate tube engaging surfaces formed on the upper edge thereof.
  • the bottom wall is suitably apertured to receive the legs of the U- bolt.
  • An example of a conventional saddle member of this type is disclosed in U.S. Pat. No. 3,199,815.
  • a saddle member of this type does not provide the guillotine type action of the first-mentioned type but rather relies upon the spaced peripheral contact of the saddle member to effect a substantially gas-tight connection.
  • An object of the present invention is the provision of a clamp assembly having an improved saddle member in the form of a tubular structure which can be simply and economically manufactured providing end sections closed at opposite sides and at the outer ends thereof but open at the inner ends thereof, in which the sides of the end sections are formed at their inner end portions with spaced wall portions, the saddle member including spaced side walls rigidly joined with the spaced wall portions of the end sections to provide in effect two parallel beams which are loaded at their ends during the installation of the assembly along the end sections, which loading is transmitted directly to the side walls so as to deflect the same substantially within the elastic limit of the side wall metal with a lateral component of deflection at the tube engaging edges thereof which increases in a direction away from the center or midpoint of the side walls, thus imparting a controlled radially inward compression to the tubes being connected throughout substantially the entire exterior periphery thereof.
  • Another object of the present invention is the provision of a clamp assembly embodying an improved saddle member of the type described which is simple in construction, effective in operation, economical to manufacture, and which is capable of being re-used due to lack of substantial deformation beyond the elastic limit of the metal embodied therein even when installed with substantial torque.
  • FIG. 1 is an exploded perspective view of a clamp assembly embodying the principles of the present invention
  • FIG. 2 is a vertical sectional view through the telescoping end portions of a pair of thin-walled tubes showing the clamp assembly of FIG. 1 in an operative position with respect thereto;
  • FIG. 3 is a sectional view taken along the line 3-3 of FIG. 2;
  • FIG. 4 is an enlarged sectional view taken along the line 4--4 ofFIG. 2;
  • FIG. 5 is a view similar to FIG. 4 showing a modified construction
  • FIG. 6 is a view similar to FIG. 4 showing a further modified construction.
  • FIGS. l-3 there is shown in FIGS. l-3 thereof a clamp assembly, generally indicated at 10, embodying the principles of the present invention.
  • the clamp assembly 10 includes essentially three main components, namely, a U-bolt, generally indicated at 12, a saddle member, generally indicated at 14, and a pair of nuts 16.
  • the clamp assembly is assembled in conventional fashion, one operative position of the assembly with respect to the telescoping end portions of a pair of thinwalled tubes being shown in FIG. 2.
  • the saddle member 14 is disposed in an operative position below the two telescoping tubes in engagement with the lower half of the exterior periphery of the outer tube, while the U- bolt 12 is disposed in engagement with the upper half of the periphery of the outer tube.
  • the description which follows refers to the clamp assembly 10 and its component parts in an operative position such as shown in FIG. 2. It will be understood, however, that the assembly is capable of operation with the component parts oriented in positions other than that shown in F IG. 2 so that terms such as bottom, top, vertical", horizontal", etc. are used herein in a relative sense and should be construed with respect to a clamp assembly disposed in an operative position such as shown in FlG. 2.
  • the U-bolt 12 may be of any conventional construction and in the embodiment shown is formed in conventional fashion from a rod of circular cross-section bent to provide a bight portion 18 and a pair of leg portions 20.
  • Thebight portion 18 is semi-circular in configuration providing an interior tube contacting surface having a radius generally equal to the radius of the exterior periphery of the outer tube.
  • lt will be understood that i the U-bolt 12 may be of the type in which the bight portion has a flattened cross-sectional configuration rather than the same circular cross-sectional configuration as the leg portions 20.
  • the leg portions 20 of the U-bolt extend from the ends of the bight portion 18 tangentially in parallel relation.
  • the free end portions of the legs 20 are threaded to receive the nuts 16. It is preferable to utilize some sort of washer means in conjunction with the U-bolt l2 and nuts 16.
  • washer means is shown in FIGS. 1-3 in the form of a single strap 21 having two apertures formed therein for receiving the legs 20 of the U-bolt 12. It will be understood, however, that conventional ring washers may be utilized or that the nuts may be integrally formed with washer means thereon.
  • the present invention is more particularly concerned with the construction of the saddle member 14.
  • the saddle member 14 is in the form of a rigid tubular structure.
  • the essential characteristics of the saddle member embodying the principles of the present invention can best be understood by considering the tubular structure as providing a pair of end sections which perform in cooperation with the legs 20 of the U-bolt 12 the function of receiving the clamping forces applied by the tightening of the nuts 16 and a central section extending between the end sections which performs in cooperation with the bight portion of the U-bolt 12 the function of applying peripheral clamping or scaling pressure to the outer tube of the connection.
  • Each end section is closed at its sides and outer end and open at its inner end.
  • the open inner end portion of each end section is formed by a pair of spaced vertically extending wall portions 22 and the remaining closed outer end portion is formed by a vertically extending central wall portion 24 interconnecting the wall portions 22.
  • each central interconnecting wall portion 24 is arcuate in horizontal section extending approximately with an interior radius slightly greater than the radius of the circular cross-section of the leg portions 20 of the U-bolt 12.
  • the spaced wall portions 22 extend generally tangentially from the central wall portions 24 a distance generally equal to the radius of the circular cross-section of the legs 20 of the U-bolt l2 and are spaced apart a distance slightly greater than the diameter of the leg portions 20.
  • the connecting wall portions 24 may assume other configurations as, for example, a flat end wall portion having two parallel flat portions extending from the ends thereof into rigid 'mterengagement with the end wall portions 22. With such a construction, it will be understood that the interior dimensions of the end sections would still loosely receive the leg portions 20 of the U-bolt, just as is the case with the preferred construction shown.
  • the junctures between such a flat end wall and parallel side wall portions could be filleted with a radius of any desired dimension, the semi-circular connecting wall portion 24 representing a fillet of a radius equal to a dimension slightly greater than the radius of the circular cross-section of the leg portions 20, as aforesaid.
  • the central section of the saddle member 14 is preferably in the form of a pair of spaced side walls 26 extending between associated pairs of end wall portions 22 for a horizontal distance generally equal to the interior diameter of the bight portion 18 of the U-bolt '12. As shown, the side walls 26 are in general alignment with the associated end wall portions 22 and are spaced apart a distance slightly greater than the diameter of the leg portions 20 in the same way as the end wall portions 22 of each end section.
  • the side walls 26 are formed with upwardly facing arcuate tube engaging edges or surfaces 28. These edges have an arcuate extent of at least 180 and preferably extend slightly more than 180 as, for example, approximately 5 beyond a full semi-circular arcuate extent adjacent each end section 22.
  • the radius of curvature is generally equal to the radius of the outer periphery of the outer tube or generally the same as the radius of the interior surface of the bight portion 18 of the U-bolt.
  • the tubular structure of the saddle member 14 is formed with downwardly facing edges 30 disposed in a horizontal plane.
  • the edges 30 provided by each end section are adapted to be engaged by the washer means of the nuts 16 when the clamp assembly is installed. While it is preferred to form the lower nut engaging edges 30 provided by the end sections co-planar with the edges 30 provided by the side walls, it will be understood that this relationship is not entirely essential and may be varied somewhat to suit the particular installation.
  • the tubular structure of the saddle member 14 is formed by punching a blank from a flat sheet of metal having attaching flange portions 32 and 34 on opposite ends thereof, bending the blank upon itself, and then rigidly securing the attaching flange portions 32 and 34 together.
  • a preferred in-line locking tab arrangement for effecting the rigid securement of the flange portions 32 and 34 is best shown in FIGS. 1 and 4. This preferred arrangement includes the provision of a pair of vertically spaced locking tabs 36 extending outwardly from the upper and lower ends of the attaching flange 32 and a central locking tab 38 extending outwardly from the other attaching flange 34.
  • the attaching flanges 32 and 34 are first brought together in abutting relation and the locking tabs 36 and 38 are then bent over the corresponding portion of the opposite attaching flanges 34 and 32 respectively.
  • the central portion of the attaching flange 32 containing the central locking tab 38 is bent outwardly, as indicated at 40, into alignment with the bent-over tabs 36 and the central portion of the attaching flange 34 between tabs 38 is correspondingly offset, as indicated at 42.
  • the in-line arrangement is preferred because the resultant joint is relatively free from exposed sharp edges between the upper and lower ends thereof.
  • FIG. 6 illustrates a rigid securement by means of projection welding.
  • the attaching flange 32 is initially provided with a series of vertically spaced projections on the surface thereof which abuts the attaching flange 34, such projections being provided by forming dimples in the attaching flange 32, as indicated at 44.
  • these projections become fused to the mating flange so that in the finished joint the surfaces of the flanges 32 and 34 are in abutment.
  • FIGS. 1-4 A preferred strengthening rib is shown in FIGS. 1-4 as being in the form of a horizontally elongated inwardly deformed central rib 46, each end of which intersects with a vertical rib 48 at the approximate midpoint thereof.
  • Each vertical rib 48 is formed in an end wall portion 22 and extends downwardly to the associated edge 30 at a position which forms a partial closure in the lower portion of the associated end section.
  • the vertical disposition of the walls forming the end sections not only serves to provide a strong structure for receiving these forces but in addition, serves to transmit the forces to the side walls with a bending action similar to that provided by a simple beam.
  • This bending action is enhanced by virtue of the fact that the vertical dimension of the side walls is a minimum at the mid-portion thereof and increases outwardly in both directions.
  • the extension may be tangential with only a slight loss of effectiveness resulting.
  • the preferred arcuate extension construction does not interfere substantially with the mounting of the saddle member in engagement with the exterior surface of the outer tube.
  • the slight inward extension of the surface does not substantially interfere with the mounting of the saddle member which can be accomplished simply by a slight pressure.
  • a clamp assembly for effecting a substantially gastight connection between two thin-walled tubes such as exhaust system parts or the like having end portions disposed in telescoping relation
  • a U-bolt having a bight portion defining a semi-circular inner peripheral surface of a size to engage in an operative position the upper exterior periphery of the outer tube end portion and a pair of legs extending tangentially therefrom in parallel relation, said legs being of circular cross-section and having the exterior periphery thereof adjacent the free end portions thereof threaded, nut means for threadedly engaging the threaded free end portion of each of said U-bolt legs, and a saddle member in the form of a rigid tubular sheet metal structure including a pair of U-bolt leg receiving end sections and a central tube engaging section rigidly interconnecting said end sections, each of said end sections including vertically extending wall means defining a vertically extending channel closed along its sides and outer end and opened along its inner end for receiving in generally loosely confined relation a leg of said
  • each of said side walls is of an integral flat planar construction having horizontally extending reinforcing ribs formed inwardly therein adjacent the lower portions thereof.
  • each of said end wall portions is of an integral flat planar construction having vertically extending reinforcing ribs formed inwardly therein adjacent the lower portions thereof.
  • said flange securing means includes a pair of vertically spaced locking tabs formed on one of said attaching flanges and bent over the other and a central locking tab formed on the other of said attaching flanges and bent over said one attaching flange.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supports For Pipes And Cables (AREA)
  • Clamps And Clips (AREA)
US00245169A 1972-04-18 1972-04-18 Clamp assembly with tubular saddle member Expired - Lifetime US3729782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24516972A 1972-04-18 1972-04-18

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US3729782A true US3729782A (en) 1973-05-01

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US00245169A Expired - Lifetime US3729782A (en) 1972-04-18 1972-04-18 Clamp assembly with tubular saddle member

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US (1) US3729782A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5147902B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2310261A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2181295A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1416461A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ZA (1) ZA73234B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889984A (en) * 1974-08-05 1975-06-17 Gen Motors Corp Integral key-clamp for exhaust pipes
US4040152A (en) * 1977-01-07 1977-08-09 Carl Gilgallon Saddle for U-bolt clamp
US4122586A (en) * 1976-07-19 1978-10-31 Carl Nothdurft Pipe clamp saddle
US4183122A (en) * 1978-09-08 1980-01-15 Donaldson Company, Inc. U-bolt clamp assembly
US4265005A (en) * 1977-05-12 1981-05-05 Heckethorn Manufacturing Company U-Bolt clamp saddle construction
DE3223647A1 (de) * 1981-07-14 1983-02-03 Heckethorn Mfg. Co., Dyersburg, Tenn. U-bolzenfoermige spannschraube mit roehrenartiger verstaerkungseinrichtung
US4479288A (en) * 1982-04-26 1984-10-30 Mercury Metal Products, Inc. Clamp for tubing
US5566916A (en) * 1995-05-26 1996-10-22 Bailey; Michael E. Adjustable pipe brace
US20070257037A1 (en) * 2006-05-03 2007-11-08 Scarborough Rashad Na Im Soda can resealing device
US20130125443A1 (en) * 2011-11-18 2013-05-23 Michael R. Ware Animal conditioning device
CN105041436A (zh) * 2014-04-18 2015-11-11 康明斯排放处理公司 用于后处理系统或类似系统中的导水器
US9200654B1 (en) * 2008-01-28 2015-12-01 Pelco Products, Inc. Mounting bracket for traffic control device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4224959A (en) * 1979-07-27 1980-09-30 Custom Systems Associates, Inc. Clamp for liquid-dispensing valve
GB2139282B (en) * 1983-05-04 1986-05-14 Frederick Edwards Telescopic stays
DE102010014497B4 (de) * 2010-04-10 2022-09-01 Audi Ag Kraftstoffverteileinrichtung für ein Kraftfahrzeug, Kraftfahrzeug und Verfahren zum Fertigen einer Kraftstoffverteileinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719345A (en) * 1954-07-02 1955-10-04 Walter F Riker Tubing clamp
US3126934A (en) * 1964-03-31 Nut locking structures
US3137053A (en) * 1958-01-06 1964-06-16 A P Parts Corp Clamp for tubing
US3605214A (en) * 1970-07-17 1971-09-20 Questor Corp Clamp for tubing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126934A (en) * 1964-03-31 Nut locking structures
US2719345A (en) * 1954-07-02 1955-10-04 Walter F Riker Tubing clamp
US3137053A (en) * 1958-01-06 1964-06-16 A P Parts Corp Clamp for tubing
US3605214A (en) * 1970-07-17 1971-09-20 Questor Corp Clamp for tubing

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889984A (en) * 1974-08-05 1975-06-17 Gen Motors Corp Integral key-clamp for exhaust pipes
US4122586A (en) * 1976-07-19 1978-10-31 Carl Nothdurft Pipe clamp saddle
US4040152A (en) * 1977-01-07 1977-08-09 Carl Gilgallon Saddle for U-bolt clamp
US4265005A (en) * 1977-05-12 1981-05-05 Heckethorn Manufacturing Company U-Bolt clamp saddle construction
US4183122A (en) * 1978-09-08 1980-01-15 Donaldson Company, Inc. U-bolt clamp assembly
WO1980000558A1 (en) * 1978-09-08 1980-04-03 Donaldson Co Inc U-bolt clamp assembly
DE3223647A1 (de) * 1981-07-14 1983-02-03 Heckethorn Mfg. Co., Dyersburg, Tenn. U-bolzenfoermige spannschraube mit roehrenartiger verstaerkungseinrichtung
US4393559A (en) * 1981-07-14 1983-07-19 Heckethorn Manufacturing Company U-Bolt clamp with tubular reinforcing means
US4479288A (en) * 1982-04-26 1984-10-30 Mercury Metal Products, Inc. Clamp for tubing
US5566916A (en) * 1995-05-26 1996-10-22 Bailey; Michael E. Adjustable pipe brace
US20070257037A1 (en) * 2006-05-03 2007-11-08 Scarborough Rashad Na Im Soda can resealing device
US9200654B1 (en) * 2008-01-28 2015-12-01 Pelco Products, Inc. Mounting bracket for traffic control device
US20130125443A1 (en) * 2011-11-18 2013-05-23 Michael R. Ware Animal conditioning device
CN105041436A (zh) * 2014-04-18 2015-11-11 康明斯排放处理公司 用于后处理系统或类似系统中的导水器
RU2660682C2 (ru) * 2014-04-18 2018-07-09 Камминз Эмишн Солюшнс Инк. Гидрозащита в системах последующей обработки выхлопных газов или подобных системах
CN105041436B (zh) * 2014-04-18 2018-11-23 康明斯排放处理公司 防水罩组件及包含其的排放后处理组件系统

Also Published As

Publication number Publication date
DE2310261A1 (de) 1973-11-08
JPS4925515A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-03-07
FR2181295A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-11-30
GB1416461A (en) 1975-12-03
JPS5147902B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-12-17
ZA73234B (en) 1973-10-31

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